I'm using Mountain Lion on a Mac Pro and Macbook Pro. I have an Academic Version of Logic 8 studio, but I would like to upgrade to Logic 9 express retail. Can my Logic 8 content (sounds) work with logic 9 express? I would upgrade to logic 9 studio, but I heard you can't do that with Academic versions.
Logic Express was discontinued a year ago, so unless you can find a copy secondhand, or some 'old stock', your choices are to find a new dvd version of Logic Studio, or buy Logic Pro from the Appstore.
Most of the Logic Pro 8 content is the same as Logic Pro 9, and most, if not all of it, will work fine with Pro 9.